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Postings from August 2001
Nathan Torkington writes:
> 5) There's no equivalent to sub {FOO} where FOO is compiled at
> compile-time. create_function() takes a string that's compiled at
> run-time. The reliance on runtime eval() makes for fragile dangerous
> code. They aren't even real anonymous functions--they have names,
> it's like gensym().
Just to clarify, I'm talking about anonymous subroutines here.
$x = sub { print "hello, world" }; # Perl
becomes
$x = create_function('', 'echo "hello, world"'); // PHP
Notice the quotes around the second argument. I haven't found a way
to build an anonymous function that doesn't revolve around eval().
I'd like someone to take my list, and Andy's comments about separation
of function from form, and create a "Perl or PHP?" FAQ that can go on
perl.org. Any volunteers?
Nat
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